SGL SeriesDuctile Iron Pumps for Refrigerants and Other Liquefied Gas Service

SPEC SHEET 801-001

Section: 801Effective: February 2010Replaces: October 2007

SGL pumps are designed for the liquid transfer or recirculation of refrigerants and other liquefied gasses. Available in five sizes with capacities of 4 to 300 gpm (15 - 1,135 L/min), constructed of shock-resistant ductile iron and available with a wide variety of seal materials, an SGL pump is the pump to use for almost any liquefied gas application.

The sliding vane, positive displacement design provides excellent priming capability and high performance over a wide range of temperatures and differential pressures. The vanes self-adjust as they wear, maintaining the efficiency of a new pump. The vanes, liner and end discs are all easily replaced, bringing the pump back to like-new specifications.

How Blackmer’s sliding vane action works

How sliding vane maintains efficiency

Replaceable casing liner and end discs Blackmer SGL models can be economically rebuilt for like-new performance with replaceable end discs and liners, specially designed to suppress cavitation and reduce wear.

Two-piece threaded lock collars Precisely position the rotor and shaft, allowing the pump to operate under high inlet pressures. In addition, this positive lock thrust control helps prevent premature wear to internal components.

External ball bearings Low friction grease-lubricated ball bearings are completely isolated from the pumpage by mechanical seals for trouble-free service and long life.

Ductile iron construction All pressure parts are of ductile iron for greater resistance to both thermal and mechanical shock.

Internal relief valve Protects the pump from excessive pressure buildup in the event of an obstructed or closed return line.

Nonmetallic Duravanes Designed to resist wear under non-lubricating conditions. These chemically inert vanes are formulated of a tough resin material for long life and quiet operation.

Blackmer mechanical seals Specially developed for non-lubricating liquids, Blackmer’s exclusive component type design is field proven to provide long life and reliable service on a wide range of liquefied gas applications.

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* Approximate data based on handling various liquefied gasses as 50 psi (3.45 bar) differential pressure.Refer to characteristic curves for capacities and horsepower at other pressures.

SGL Series Ductile Iron Pumps for Refrigerants and Other Liquefied Gas Service

SGL Applications – Typical Products

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Pump Performance DataPump Model

SGRL1.25 SGL1.25 SGL1.5 SGLD2 SGLD3 SGLD4

Speed (rpm) 1,750 1,450 1,150 850 1,750 1,450 1,150 850 1,750 1,450 1,150 850 640 520 420 640 520 420 640 520 420U.S. gpm 16 13 10 6 21 17 13 8 32 26 21 14 67 50 40 133 108 80 108 220 170

L/min 61 49 38 23 79 64 49 30 121 98 79 53 254 189 151 503 409 303 1,022 833 643hp 1.3 1.1 0.9 0.7 1.7 1.4 1.2 0.9 2.2 1.8 1.4 1.2 3.9 3.1 2.5 8.0 6.7 5.2 15.5 12.2 10.0

Pump ModelNominal Flowrate Pump Speed Differential Pressure Working Pressure Minimum Temperature

gpm L/min rpm psi bar psi bar ºF ºC

SGRL1.25 16 61 1,750 150 10.3 525 36.2 -30 -34SGL1.25 21 79 1,750 150 10.3 525 36.2 -30 -34SGL1.5 32 121 1,750 150 10.3 525 36.2 -30 -34SGLD2 67 254 640 150 10.3 525 36.2 -30 -34SGLD3 133 503 640 150 10.3 525 36.2 -30 -34SGLD4 270 1,022 640 125 8.6 525 36.2 -30 -34

Maximum Operating Limits Companion FlangesPump Model Standard Optional

SGRL1.25SGL1.25

1-1/4" NPT Tapped Ports –

SGL1.51-1/2" NPT Tapped Ports –

SGLD2 2" NPT 2" Weld

SGLD3 3" NPT 3" Weld

SGLD4 4"x 3" Weld –

For Other Applications...For propane/butane or anhydrous ammonia applications, consider Blackmer’s LGL pumps or LB compressors. For CO2 applications, consider Blackmer’s CRL pumps or HD compressors. For railcar transfer, or where vapor recovery is desired, consider Blackmer’s HD compressors.

Visit Blackmer’s web site www.blackmer.com for more detailed information on the SGL pumps and other Blackmer products.

n Butadiene

n Butene

n Dimethyl Ether

n Ethyl Chloride

n HCFC - 22

n HFC - 23

n HCF – 125

n HCFC - 134a

n HCFC – 142b

n HFC – 143

n HFC – 152a

n MAPP Gas

n Methyl Chloride

n n-Pentane

n R11

n R12

n R13

n R22

n R112

n R113

n R114

n R115

n R502

n Refrigerants – MF/TA/TMS/TF

n Most 400 & 500 Series Blends

n Sulfur Dioxide

...and others

Note: Optional materials of construction may be required to meet specific application requirements – refer to Blackmer Material Specification Sheets.

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Grand Rapids, MI 49503-1530 USAT 616.241.1611 F 616.241.3752